National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fog/Mist

42°F

6°C

Humidity 100%
Wind Speed NW 6 mph
Barometer 30.05 in
Dewpoint 42°F (6°C)
Visibility 2.50 mi
Wind Chill38°F (3°C)
Last update 20 Nov 1:35 am CST
Extended Forecast for

Gann Valley SD

  • Overnight

    Overnight: Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 33. Northwest wind 9 to 11 mph.

    Low: 33 °F

    Patchy Fog

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 47. Northwest wind around 6 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Southeast wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. South southwest wind around 6 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. West wind around 7 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55. West northwest wind 6 to 9 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30. West wind around 7 mph becoming south in the evening.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 33. Northwest wind 9 to 11 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 47. Northwest wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 28. Southeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 49. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 31. South southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 58. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 32. West wind around 7 mph.
Sunday
Sunny, with a high near 55. West northwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 30. West wind around 7 mph becoming south in the evening.
Monday
Sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Mostly sunny, with a high near 44. Breezy.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gann Valley SD
 44.04°N 98.98°W (Elev. 1709 ft)
Last Update:
1:36 am CST Nov 20, 2025
Forecast Valid:
1am CST Nov 20, 2025-6pm CST Nov 26, 2025
 
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